Stm32 Serial Flash Loader Device
I am designing a breakout board for the STM32F103RB, I have the UART1 pins out so I can use flash programming rather than JTAG, but I am having no luck with ST flash programmer it gives me different problem messages. 1) 'Unrecognized device.please, reset your device then try again' 2) 'No response from the target, the boot loader can not be started. According to the source code in Sloadhost (see below) the autobaud character is 0x7f, or DEL, and the response is 0x79, or 'y'. So in theory you should be able connect with a terminal program, reset the board, hit (or hold down) the DEL key, and see a 'y' in response. When I tried this on a commercial dev board I did get a response, but it wasn't a 'y' - it was more like the sort of garbage you expect to see with wrong baud rate, etc.
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USB Serial for Blue Pill (STM32) with PlatformIO 1 year ago. The Blue Pill (STM32) can be bought very cheaply on sites like eBay and Aliexpress, but they likely do not come shipped with a USB bootloader. Jul 28, 2015 - My Lightweight STM32 UART Flash Loader - Page 1. I've just finished developing a simple C# library for communicating with UART Bootloaders, that ST incorporates in their STM32 family products. Similar situation happens when I compare a programmed device with the programmed data.
Stm32 Serial Flash Loader Device Windows 7
Same thing at 57600 or 115200. I only tried 8n1 - that might be my problem. More research required. (Sorry - too lazy to dig through the ST docs right now.) Anyway you might try that and see if you're getting anything at all from the STM32. A scope or even a multimeter might help.
Search this topic for 'sloadhost' - Alex Faveluka's program has been very useful for me, but diagnostics are not its strong point, and I'm not sure it includes a Windows binary. EditThe terminal program I tried first ('screen') was sending a 4 character sequence when I hit the DEL key.
Hence the garbage. It turns out that HyperTerminal can be set to send DEL (0x7f) when you hit the backspace key. Using that method I was able to get the 'y' response. However, forget what I said about holding the key down - it seems to be a one-time thing. I think this is the first time I've ever written anything positive about HyperTerm!